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Finding the Fourth Proportional to 88,658.80, 132,988.20 and 42,002.80

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Solution

The fourth proportional to 88,658.80, 132,988.20 and 42,002.80 is: 63,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,658.80 : 132,988.20 = 42,002.80 : x
  2. Step 2: Convert to fraction form
    88,658.80/132,988.20 = 42,002.80/x
  3. Step 3: Cross multiply
    88,658.80x = 132,988.20 × 42,002.80
  4. Step 4: Simplify right side
    88,658.80x = 5,585,876,766.96
  5. Step 5: Solve for x
    x = 5,585,876,766.96/88,658.80
  6. Step 6: Final answer
    x = 63,004.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.